Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

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Air Bag Control Module: Testing and Inspection

Sensing and Diagnostic Module (SDM) Inspection

CAUTION: Do not connect a tester whatever type it may be. Never repair or disassemble SDM. If SDM was dropped from a height of 91.4 cm (3 ft) or more, it should be replaced.

1. Check SDM and SDM bracket for dents, cracks or deformation.
2. Check SDM connector for damage cracks or lock mechanism.
3. Check SDM terminal for bend, corrosion or rust.
If any faulty condition is found in above checks, replace.